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with an optional bottom-mounted configuration
12 alarm tones with side-button adjustment
After power connection
6 system alarm tones and user-replaceable warning voice prompts
196ft wireless remote range for convenient control
YASONG 110dB Hand Crank Siren, Manual Portable Emergency Alarm Horn, No Power Required, Red or Green Wi-Fi Network Alarm Systems & Sirens with an optional bottom-mounted configurationThe YASONG hand crank siren is a manual emergency warning horn designed for locations where power supply may not be available. It is suitable for factories, homes, schools, warehouses, flood control areas and temporary emergency warning use. This model works by hand operated cranking, so it does not require wiring, batteries or charging. The faster the handle is cranked, the louder the siren sound becomes. Manual hand crank operation with no power
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